What we sell?Hifonics Alpha A2500.5D 2500 Watts D-Class Hybrid 5 Channel Car Audio Amplifier + AMP KIT + HFEQ7 The Hifonics ALPHA A-2500.5D amplifier is a 5 channel amplifier with a hybrid of Full Range Super D-Class® and Super D-Class® Technologies. Engineered and manufactured with voltage matched, tight tolerance and hand selected proprietary components on the double sided glass epoxy PC board, ALPHA delivers Hifonics best ever sound quality and power output. The innovative use of SMT (Surface Mount) and through-hole components are designed to fit into a much smaller package than other amplifiers available from Hifonics. Features: LOW NOISE PREAMPLIFIER CIRCUITRYMaximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification processRCA INPUTSNickel plated RCA connectors for audiophile signal quality and maximum signal throughput with minimum distortion and maximum external noise rejectionOPERATION MODEFlexible installation allows this amplifier to run in four channel or mono mode simultaneouslyCROSSOVER TYPEAccu-Cross crossovers allow for complete control of the signal directing to all speakers. See specifications section for specific frequenciesELECTRONIC EQUALIZERControl of amplifier output with on board electronic crossover to tailor specific frequencies to speakers and subwoofers. Check specifications for specific frequencies for this amplifierCLASS / TOPOLOGYDeveloped over 4 decades of engineering to deliver the highest level of sound quality and power efficiency. Hifonics ALPHA Super D-Class® and Full Ranger Super D-Class hybrid Five Channel topology results in lower distortion, higher current efficiencies and less heat than conventional amplifier designsOUTPUT DEVICE TECHNOLOGYThe Ultra-Fi™ MOSFET is designed for music production vs just electronics output power. It produces very musical high power with high efficiency for cooling and minimal distortionHEAT SINKHeavy duty aluminum alloy heat-sink efficiently moves heat from the MOSFET where it can be cooledPOWER SUPPLYThe Twin Turbo Coil PS is a Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devicesOUTPUT CONNECTIONSNickel plated, high temperature impact resistant with hex screw terminals that allow for secure connections and is erosion resistantCONNECTION TYPESecure connection for all power, ground and speaker connections. Angled for ease of access during installation.LED SYSTEM PROTECTION CIRCUITRY DIAGNOSTICSMonitor overload and speaker short protection with illuminated indicators on the amplifier end panelBASS REMOTE INCLUDEDHFR-31Wired Bass Remote allows adjustments to bass frequencies from the control which can be mounted anywhere in the vehicle. Smooth potentiometer and ringed illumination in a satin black mount create a custom lookChannel 5 OnlyFULL RANGE DIGITALFull Range Super D Class, high efficiency/high power technology to deliver maximum wattage. With this focus on engineering, big sound while remaining very musical in a compact chassis is the result.SMT INSIDEWith Surface Mount Technology the typical "through-hole" placement and the larger tolerances from human placement is dramatically improved. In addition, circuit engineers can design better circuits for power and sound quality as the tolerances of SMT components are superior to larger "through-hole" components.Because of their lower mass SMT components withstand shock and vibration making them perfect for audio designed for all vehicles.300KHZ HIGH SPEED PULSINGThe switching speed of the Class D chip puts the amplifier sampling frequencies at over 100 times higher than human ears can hear. This means that the amplifier and the very fast digital switching remains un-hearable in the audio bandwidth for music. Technical Details: CLASS : Full Range Super D-Class®Super D-Class®TOTAL CHANNELS : 5POWER @ 1 OHM : 1 x 750 Watts Subwoofer CH5 OnlyPOWER @ 2 OHMS : 4 x 100 Watts + 1 x 450 Watts CH5POWER @ 4 OHMS : 4 x 60 Watts + 1 x 250 Watts CH5CROSSOVER : ElectronicVARIABLE HIGH PASS CROSSOVER 12DB PER OCTAVE : CH 1 & 2 : 10Hz - 250Hz / CH3 & 4 : 10Hz - 250HzVARIABLE LOW PASS CROSSOVER 12DB PER OCTAVE : CH 5 Only : 50Hz - 250HzTONE CONTROL/PARAMETRIC EQ : Bass EQBASS BOOST : 0~12dB@45HzVARIABLE VOLTAGE : 200mV - 10VSIGNAL TO NOISE : >85dBFREQUENCY RESPONSE : CH1-4 : 10Hz-250Hz / CH5 : 50Hz-250kHzTOTAL HARMONIC DISTORTION (THD) : <0.05%SPEAKER LEVEL AUDIO INPUTS : YesPOWER TERMINAL 12V/GND : 12 AWGSPEAKER TERMINAL WIRE GAUGE : CH1 - 4 : 18 AWGCH5 : 16 AWGFUSING : Use Extermal FuseTURN ON CIRCUIT : SwitchedRemote Turn-On / Signal Sense On : CH1-4 onlyHEATSINK SIZE : Length: 13in x Depth: 5.75in x Height: 2.37in Package Contents: Hifonics Alpha A2500.5D AmplifierBGC45R HFEQ7BLACK Thing you should know: // NEED TO PRICE MATCH?See lower price? We will try to give you an even lower price! Just ASK us! // NEED TO TALK TO US?Just email us and we will get back to you within 24 hours // NEED TO RETURN or EXCHANGE?You can return the unit with eBay Easy Return step or just email us and we will tell you the exact instruction on how to return the unit. We will also give you an RA# so the unit won't be lost. // OUR RETURN / EXCHANGE POLICY60 days full refund . We will pays for shipping 2-way for any defective units . Unwanted? Just return it to us for full refund . NO QUESTIONS ASKED! Listing and template services provided by inkFrog